On 31 January 2018 at 22:09, Thor Thayer <[email protected]> wrote: > Hi, > > I'm enabling the ARM SMMU-500 on an ARM64 A53. I'm hitting a data abort in > the probe functions because I'm accessing the registers in EL1 mode. >
Why do you think the fact that you are running at EL1 is causing the data abort? > Linux starts in EL2 mode but drops down to EL1 mode by the time it reaches > the arm-smmu probe function. > > Is there something else I need to add to either move the arm-smmu probe > earlier or remain in EL2 until after the arm-smmu probe? > No. I am pretty sure EL2 vs EL1 is not causing your issue. Could you elaborate on the nature of the exception you are getting? > A Google search didn't turn up anything so I hoped posting to the list would > help. > > Thanks in advance, > > Thor > > > _______________________________________________ > linux-arm-kernel mailing list > [email protected] > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
